Backplate



FIG. 1 is a front perspective view of a backplate showing my new design, with a hook affixed thereto;

FIG. 2 is a rear perspective view thereof, with a hook affixed thereto;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a front plan view thereof;

FIG. 6 is a rear plan view thereof;

FIG. 7 is a top plan view thereof; and,

FIG. 8 is a bottom plan view thereof.

The hook shown in broken lines in FIGS. 1 and 2 is included for illustrative purpose only and form no part of the claimed design. 

The ornamental design for a backplate, as shown and described. 